Oxidative copolymerization of indene with p-tert-butylstyrene: Synthesis, characterization, thermal analysis, and reactivity ratios

De, Priyadarsi and Sathyanarayana, DN (2002) Oxidative copolymerization of indene with p-tert-butylstyrene: Synthesis, characterization, thermal analysis, and reactivity ratios. In: Journal of Polymer Science Part A: Polymer Chemistry, 40 (1). pp. 9-18.

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Abstract

Copolyperoxides of indene and p-tert-butylstyrene of different compositions were synthesized by free-radical-initiated oxidative copolymerization. The compositions of the copolyperoxides, obtained from H-1 and C-13 NMR spectra, were used to calculate the reactivity ratios of the monomers. The reactivity ratios indicated a larger proportion of indene units in random placement in the copolyperoxides. Thermal-degradation studies by differential scanning calorimetry and electron-impact mass spectrometry supported alternating peroxide units in the copolymer backbone. The activation energy for thermal degradation suggested that the degradation was dependent on the dissociation of the peroxide (-O-O-) bonds in the backbone of the copolyperoxide chain. The flexibility of the copolyperoxides was examined in terms of the glass-transition temperature.

Item Type:	Journal Article
Publication:	Journal of Polymer Science Part A: Polymer Chemistry
Publisher:	John Wiley and Sons
Additional Information:	Copyright of the of article belongs to John Wiley and Sons.
Keywords:	copolymerization with oxygen;molecular weight;reactivity ratios;differential scanning calorimetry (DSC);exothermic degradation
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	18 Nov 2009 11:34
Last Modified:	19 Sep 2010 04:57
URI:	http://eprints.iisc.ac.in/id/eprint/17617

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